Insulator.



E. FRIEDLAENDER. INSULATOR. APPLICATION FILED MAR. 22. 1913.

1 ,1 1 1 ,570. Patented p 22, 1914,

FIG. 3

lNVENT OR W 4 WM M WITNESSES EUGENE FBIEDLAENDER, 0F

To all ibhoti. vita?) concern:

Be it know thatL Eirdnivn F RIEDLAENDER, a citi'ieii the "United States, residing at Braddock," the county of Allegheny and Staterof Pennsylvania, have invented a new and usefu'1"Insu1aw1-;0r which the following is a specification My? invention relates to insulators employed; in supporting electric conduct ors for electric railways," traveling cranes, and like apparatus, and while not restricted to such use," more particularly relates to the 'con-' structi'on ahd arrangement of third rail insulators used. with electric railways employing a1thirdrai1: I

Oneobjct of my invention is to prov de a strong-find {durable insulator of simple constructionand having novel means whereby the insulator is applied 'for use in securing electricconductors','such as third rails, in operative position onthe railway track crane, or crane runway, with iwhichfthe insulators are used; 1 I

Anothriobject of my invention is to provide an insulator having improved means whereby the ossibility of loss of electrical energyis avoided andovercome, and liability of grounding orshort-circuiting in all sorts of weatherislessencd and prevented; V

Still 'further objects of the invention will become apparent as the invention is more fully described-and claimed hereinafter Referring'to the drawings forming part of this specification, Figure lis'an end elevation 'sh'owingan' insulator as constructed and arrangedin securing the third rail of an electric railway; in-position upon a metal cross tie, infl accordancewith my invention. Fig. 2 is a longitudinal side elevation of the insulator shown in Fig. 1. f Fig. 3 is a plan showing the insulator construction of Figs. 1 and-2w a M In thea'ccompanying drawings, the numeral 2'designates a" metal. cross tie of I- beam formfhaving a metal'base or chair 3 secured thereto by means of clips land fas'r tening bolts a 1 f The 'upper 'faceofthechair 3 has upwardly extending flanges or lugs 6 positioned on opposite sides and at diagonal corners thereof"'which 'a're'a'rranged to embrace the sidesvof the insulating body 7. This body of 'insulatingmaterial' preferably is formed of salt glazed porcelain, although fiber, wood or other suitable material may be substituted therefor when desired. Transversely extending registering holes are pro--- I Specification. of Letters Patent.

raruu'r OFFICE.

BRADDOCK, PENNSYLVANIA. v I

v i (led "in at; lugs 6, 6, and body 7 for'the fastening bolts the insulating body is" secured terial 7 are provided with outwardly when found-necessaryor desirable. I

flanges or lugs to engage the flanges-of the third raill3 permit the third rail to be inserted in place flanges to overlap the flanges 13 andsecu'i'e lines in the drawings. a

between the chair or base 3 and the third 7 of the third rail as erected in cross ties 2 of the electric railway.

. Patented Sept. 22, 1914; Ap licationfil'ed March 22,1913. SerialNo.7 56,185. 9 q

the insulating 1. f] v 8, 8, by which to the chair 3. f The opposite sides of the insulatin ma ro-, jecting flanges or ribs 9 forming skirts which? increase the surface over which moisture must creep or travel in order toform a. ground. The ends of the insulation, being"; protected by the base of the T-head' third? rail forming the conductor, do not need this? protection and for that reasondo'not have the skirts, although they may be provided 1 Sup-mounting the insulator 7 is fa metal" 10' -"having downwardly projecting v 11, 11, embracing the sides of; I the insulator, these lugs being positionedon opposite sides and diagonally opposite corners of thecap 10, and'the upper faceo'f the cap 10 has inwardly'jexten'ding hook flanges 12,12, positioned on the same diago f nally opposite-corners thereof andfgarranged and secure the third rail 13 in position on the'j cap 10. RegisteringopeningsorhOlesare H provided in the downwardly extending flangesll, 11:," and the upper portionof the' insulating body 7 through which 'fast'eningfu bolts 14 extend. to secure the cap 10 in posij tion on the body of insulating material 71 I j The cap 10 is made of such length and the hook flanges are positioned thereon in such manner asvvill make the shortest dis tance between the adjoining corners of the diagonally opposite hook flanges 12, 12',

slightly greater than the overall widthof 1 the base flanges of the third rail:13, so as to rail 13 without. any relative disarrarig'ement v place on the v between the hook flanges, while positioned angularly relative thereto as indicatedfby 1 v the dotted lines in Fig. 3, and cause the hook v I the third rail in position on thelinsulator f when in the relative positions shown in full By means of the construction shown the removal of the bolts 8 and 14 and the provision of the flanges 6 and 11' on diagonally 1 opposite corners of the base 3 and cap 10, enables the body of insulating material? to'Q Q '1- be removed from and replaced in position the apparatus has been shgw n as applied for use and secured in place on the metal cross ties of electric railways, the ins'ulator may be employed with wooden ties and with electric traveling cranes, ore bridges, .gantries, and laying car tracks, and to other uses in securing the third rails or electric conductors in operative osition by making suitable changes in the f drm of the chair or base 3 supporting the body of insulating material. I

The advantages of my invention will be apparent to those skilled in the art.

Modifications in the construction and arrangement of the parts may be made without departing from my invention as defined in the appended claims.

I claim 1. In an insulator for electric conductors, the combination with a conductor and a relatively fixed metal chair having upwardly extending lugs on diagonally opposite corners thereof, of a metal cap havlng conductor engaging hook flanges on its upper face and downwardly extending lugs on diagonally opposite corners thereof, a body of insulating material between the chair and cap and embraced by the lugs on the said chair and cap, said insulating material having bolt holes therethrou h registering with holes in said lugs and b0 ts fastened in the registering holes to secure the insulating material to the chair and cap, the lugs on'the cap being located on the diagonally opposite corners diagonally opposite the lugs on the chair to permit the insertion and removal of the insulation without relative disarrangement of the conductor and chair.

2. In an insulator for electric conductors, the combination with a conductor and a relatively fixed metal chair having upwardly extending lugs on diagonally opposite corners thereof, of a metal cap having conductor engaging hook flanges -on its upper face and downwardly extending lugs on diagonally opposite corners thereof, a body of insulating material between the chair and cap and embraced by the lugs on the said chair and cap, said insulating material havin bolt holes therethrough registering with ho es in said lugs and bolts fastened in the registering holes to secure the insulatin material to the chair-and cap, the hoo flanges on the cap beinglocated on diagonally opposite corners of the insulating material from the lugs on the chair to per mit the insertion and removal of the insulation and cap without relative disarrangement of the conductor and chair.

3. In an insulator for electric conductors, the combination with a conductor and -a relatively fixed metal chair having upwardly extending lugs on diagonally opposite corners thereof, of a metal cap having material to the chair and cap, the lugs and the hook flanges on the cap being located on diagonally opposite corners of the nsulating material from the lugs on the chair to permit the-removal and insertion of the insulation of the cap without relative disarrangement of the conductor and chair.

combination a metal chair, a body of .in-

4. A third rail insulator comprising in sulating material removably mounted on the chair and having bolt holes -therein,'-a metal cap surmounting the insulating materialhaving integral rail engaging hook flanges thereon whereby the body of insulating material is fastened to the third rail, and means for detachably securing the insulating-material and cap on said chair to permit the removal and replacement thereof, said means including lugs on two diagonally opposite corners of the chair and the cap embracing the body of insulating material, and

securing bolts in the registering holes in said lugs and insulatingmaterial.

5. In a third rail system the combination with a third rail and cross-tie, of an insulator for fastening the rail tothe' tie, said insulator comprising ametal chair fixed to the tie, a body of insulating material removably mounted on' said chair and having transversely extending bolt holes therein, i

and a metal rail securingcap surmounting and fastened to the insulating material, up-

wardly projectin lugs on the metal chair embracing the si es of the insulating material and having bolt holes therein'r'egistering with transversely extending holes in the insulating material and fastening bolts said lugs being positioned on two diagonally opposite corners of the chair to permit removal and replacement of the insulating material without relative disarran ement of the assembled cross-tie and thlICl Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

11-6- extending through the registering holes to secure the insulating material to the chair, 

